–We should do what we can _____ the endangered animals.` --Yes, it’s duty_____ them.
#50588
A
save, to protect
B
save, protect
C
to save, protect
D
to save, to protect
推荐题目
His grandparents used to ________ a walk after dinner, but now they are used to ________ a walk after breakfast.
#50244
A
take, take
B
taking, taking
C
taking, take
D
take, taking
His father often tells him _______ in that river because it’s dangerous.
#50031
A
not to swim
B
not swim
C
swim
D
to swim
Don’t throw away the waste paper. It needs so that it can be reused.
#49285
A
to destroy
B
destroying
C
to collect
D
collecting
—What should I do, doctor? —______healthy, you should take more exercise.
#50576
A
To keep
B
Keep
C
Keeping
D
Kept
The students asked Mr. Wang ______ them some advice on reading.
#50679
A
give
B
gave
C
giving
D
to give